yes go for only and only---> Avidemux
abt SolveigMM it can cut key frames...but i have notice its output file have little bit quality prob...Though the developer of that soft says zero change in quality output..but its WRONG...some changes r there in files... It only good for old formats mp4 files..but cant able to handle latest HD Formats files...bloody crash while doing so

No any problem with output files on SolveigMM, only with some MKV (and write about it earlier). Since i DL movies from VOD paysite - SolveigMM is best progam for me for cutting various phone sex ads, parts of black screen and other video garbage.

No any problem with output files on SolveigMM, only with some MKV (and write about it earlier). Since i DL movies from VOD paysite - SolveigMM is best progam for me for cutting various phone sex ads, parts of black screen and other video garbage.

I use boilsoft video splitter (not free but )
it cuts without re-encoding without problems
except for MKVs

but still cuts them like this
let's say you have a 10 minutes video (video.mkv), and you need a scene in the middle
you end up with 3 pieces.

video-01.mkv
video-02.mkv
video-03.mkv

the scene you want is in 02.

If you want the vid from the start to a point, you have of course only 2 pieces.
from start until the point you mark and then another piece from there to the end.

It will convert any format to any other, including MKV.
At the same time it can remove subtiles, reshape/resize,
chop off beginnings and ends (like the SWV trailers) etc.

Best done on a second pass, it can then also manually:
Remove "letterboxing/windowing" (black margins).
Tweak brightness/contrast/saturation, (but not tint),
although the "proof window" does not always quite match
the final result.

I then use Windows Moviemaker to do all the editing.
Though no longer supported or supplied by MS, as
the "Windows essentials" package it can probably be found
out there somewhere.

It works best with either WMV or MP4 files.
They need to 16:9 or 4:3. before you start.
It's not keen on doing a lot of work at once on
huge Gb sized files, as it can go slow or hang.
You can greyscale, and tweak brightness only.
Surprisingly powerful when you get the hang of it's many
features, though some are buried deep!